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Reworking clipping logic; Fixes BUKKIT-1472

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This commit is contained in:
Wesley Wolfe 2012-04-15 18:29:02 -05:00
parent 2e646d2809
commit e28ae3f2fe
1 changed files with 26 additions and 84 deletions
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110
src/main/java/net/minecraft/server/EntityTrackerEntry.java
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@ -6,6 +6,8 @@ import java.util.Iterator;
import java.util.List;
import java.util.Set;
import org.bukkit.util.NumberConversions; // Craftbukkit
public class EntityTrackerEntry {
public Entity tracker;
@ -29,11 +31,6 @@ public class EntityTrackerEntry {
private int u = 0;
public boolean n = false;
public Set trackedPlayers = new HashSet();
// CraftBukkit start
public static ArrayList<AxisAlignedBB> collisions = new ArrayList<AxisAlignedBB>();
public static ArrayList<AxisAlignedBB> bigCollisions = new ArrayList<AxisAlignedBB>();
public static AxisAlignedBB entityBB = AxisAlignedBB.a(0, 0, 0, 0, 0, 0);
// CraftBukkit end
public EntityTrackerEntry(Entity entity, int i, int j, boolean flag) {
this.tracker = entity;
@ -56,75 +53,6 @@ public class EntityTrackerEntry {
return this.tracker.id;
}
// CraftBukkit start
private int[] fixCoords(int bigX, int bigY, int bigZ) {
final float halfWidth = this.tracker.width / 2.0F;
this.collisions.clear();
this.getCollisions(this.tracker.boundingBox, this.collisions);
// loop through all combinations of adding 0 or 1 to x, y, and z
outerloop:
for (int i = 0; i < 8; i++) {
int x = bigX + (i & 0x1);
int y = bigY + (i >> 2 & 0x1);
int z = bigZ + (i >> 1 & 0x1);
// create a bounding box for our possible match
double minXd = (x / 32.0D) - halfWidth;
double maxXd = (x / 32.0D) + halfWidth;
double minYd = (y / 32.0D) - this.tracker.height + this.tracker.bO;
double maxYd = (y / 32.0D) - this.tracker.height + this.tracker.bO + this.tracker.length;
double minZd = (z / 32.0D) - halfWidth;
double maxZd = (z / 32.0D) + halfWidth;
this.entityBB = this.entityBB.c(minXd, minYd, minZd, maxXd, maxYd, maxZd);
this.bigCollisions.clear();
this.getCollisions(entityBB, this.bigCollisions);
if (this.collisions.size() == this.bigCollisions.size()) {
for (int j = 0; j < this.collisions.size(); j++) {
AxisAlignedBB collision = this.collisions.get(j);
AxisAlignedBB bigCollision = this.bigCollisions.get(j);
if (!(collision.a == bigCollision.a && collision.b == bigCollision.b && collision.c == bigCollision.c && collision.d == bigCollision.d && collision.e == bigCollision.e && collision.f == bigCollision.f)) {
continue outerloop;
}
}
// if we make it here we got a match
return new int[] { x, y, z };
}
}
return new int[] { bigX, bigY, bigZ };
}
private void getCollisions(AxisAlignedBB bb, ArrayList collisions) {
int minX = MathHelper.floor(bb.a);
int maxX = MathHelper.floor(bb.d) + 1;
int minY = MathHelper.floor(bb.b);
int maxY = MathHelper.floor(bb.e) + 1;
int minZ = MathHelper.floor(bb.c);
int maxZ = MathHelper.floor(bb.f) + 1;
for (int curX = minX; curX <= maxX; curX++) {
for (int curZ = minZ; curZ <= maxZ; curZ++) {
if (!this.tracker.world.isLoaded(curX, 64, curZ)) {
continue;
}
for (int curY = minY; curY <= maxY; curY++) {
Block block = Block.byId[this.tracker.world.getTypeId(curX, curY, curZ)];
if (block == null) {
continue;
}
// get all bounding boxes for this block that intersect the entity
block.a(this.tracker.world, curX, curY, curZ, bb, collisions);
}
}
}
}
// CraftBukkit end
public void track(List list) {
this.n = false;
if (!this.s || this.tracker.e(this.p, this.q, this.r) > 16.0D) {
@ -138,16 +66,30 @@ public class EntityTrackerEntry {
++this.u;
if (this.m++ % this.c == 0 || this.tracker.ce) {
int i = MathHelper.floor(this.tracker.locX * 32.0D);
int j = MathHelper.floor(this.tracker.locY * 32.0D);
int k = MathHelper.floor(this.tracker.locZ * 32.0D);
// CraftBukkit start - Add logic for clipping;
boolean xFlag = NumberConversions.floor(this.tracker.locX) - this.tracker.locX > -.5d;
boolean zFlag = NumberConversions.floor(this.tracker.locZ) - this.tracker.locZ > -.5d;
if ((this.tracker.width % 2f) >= 1f) {
xFlag = !xFlag;
zFlag = !zFlag;
}
// CraftBukkit start - fix up coordinates to prevent entities clipping through blocks
int[] fixedCoords = this.fixCoords(i, j, k);
i = fixedCoords[0];
j = fixedCoords[1];
k = fixedCoords[2];
// CraftBukkit end
int i;
int j = NumberConversions.ceil(this.tracker.locY * 32.0D);;
int k;
if (xFlag) {
i = NumberConversions.ceil(this.tracker.locX * 32.0D);
} else {
i = NumberConversions.floor(this.tracker.locX * 32.0D);
}
if (zFlag) {
k = NumberConversions.ceil(this.tracker.locZ * 32.0D);
} else {
k = NumberConversions.floor(this.tracker.locZ * 32.0D);
}
// CraftBukkit end - logic for clipping
int l = MathHelper.d(this.tracker.yaw * 256.0F / 360.0F);
int i1 = MathHelper.d(this.tracker.pitch * 256.0F / 360.0F);
@ -191,7 +133,7 @@ public class EntityTrackerEntry {
if (this.tracker instanceof EntityPlayer) {
this.scanPlayers(new ArrayList(this.trackedPlayers));
}
object = new Packet34EntityTeleport(this.tracker.id, i, j - 1, k, (byte) l, (byte) i1); // move entities down 1 client side so they don't clip up out of boxes
object = new Packet34EntityTeleport(this.tracker.id, i, j, k, (byte) l, (byte) i1); // move entities down 1 client side so they don't clip up out of boxes
// CraftBukkit end
}